Based on mud stone sonic log and measured fluid pressure, the paper analyzes the distribution of abnormal pressure in the Chexi sag, as well as its influence on petroleum migration and accumulation.

• 本文综合应用试油实测压力与泥岩声波时差资料计算分析了车西洼陷异常流体压力的分布特征及其与油气运移聚集的关系。